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Topic Review (Newest First)

07-31-2015 06:05 AM

AmericanCaveman

Quote:

Originally Posted by FFhb13

Ive been driving without airbox cover for a few weeks and its been hot, i havent noticed any loss of power or bogging

Thanks for the feedback. I think I'll give that a try this evening. I love intake noise, especially if all I want to do to make it quiet is throw the airbox lid back on.

I think my Focus sounds great with the resonator delete, but it only really makes noise from around 3,800 RPM on up. It would be nice to hear some intake noise farther down low on the power band.

07-31-2015 01:26 AM

FFhb13

Ive been driving without airbox cover for a few weeks and its been hot, i havent noticed any loss of power or bogging

07-29-2015 04:21 PM

AmericanCaveman

Quote:

Originally Posted by dave89iroc

I did temp testing with thermocouples on an old car, not a focus, with with a shield to the engine compartment, air temp at hot idle wasn't much different from engine bay temp to inlet temp(due to heat soak), but driving often saw 30+ degree drop

Very interesting! Thanks for doing the research.

Does anyone have any factory airbox lids? I want an extra one to experiment with.

07-29-2015 12:46 PM

Gi_Jo_Nathan

Just wanted to make sure some of you new guys are aware of the New Mission Mod.

07-29-2015 11:07 AM

dave89iroc

I did temp testing with thermocouples on an old car, not a focus, with with a shield to the engine compartment, air temp at hot idle wasn't much different from engine bay temp to inlet temp(due to heat soak), but driving often saw 30+ degree drop

07-29-2015 09:54 AM

TboneZX3

Quote:

Originally Posted by AmericanCaveman

I don't understand how CAI's don't get heat soak after doing research on taking our lids off.

A true CAI won't. "CAI" is a term falsely applied to many intakes these days, IMO. If a CAI is pulling air from the bottom of the engine bay in open air (like AEM), the air entering the intake is not affected by the heat rising off the engine. There will still be some heat soak from the intake tube, but likely not any more than with the stock intake tubes.

BTW, I'm running the K&N 57s-4000 (the one with the lid on stock box, the hole in the filter & plug for the hole), and there is a very noticeable difference in the heat of summer plugged vs. unplugged. When unplugged, it will bog off the line. This same difference will be realized stock lid on vs. off, and is very likely even more noticeable, as even with the plug removed from my intake, some "cool" air is still being pulled from the snorkle area.

07-28-2015 09:00 PM

unida767

Quote:

Originally Posted by AmericanCaveman

I might do it on a cooler evening though.

I don't understand how CAI's don't get heat soak after doing research on taking our lids off.

The good ones have heat shields and also make a seal with the hood. AEM feeds down to behind the front triangle grill.

07-28-2015 08:54 PM

AmericanCaveman

I might do it on a cooler evening though.

I don't understand how CAI's don't get heat soak after doing research on taking our lids off.

07-28-2015 07:09 PM

Truth in Ruin

Quote:

Originally Posted by AmericanCaveman

You have a point there. Tomorrow is supposed to be around 100.

Really not looking forward to going to work in that.

At that temp, you'd probably get heat-soak driving with no lid in stop & go traffic. I bet the intake would be nice and growly though :)

07-28-2015 07:01 PM

AmericanCaveman

Quote:

Originally Posted by Truth in Ruin

Personally I think it's a little warm out to be running no lid. Should be a decent winter mod though.

You have a point there. Tomorrow is supposed to be around 100.

Really not looking forward to going to work in that.

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